APA (7th ed.) Citation

Holder, K. R., & Montgomerie, R. D. (1993). Rock ptarmigan: Lagopus mutus. American Ornithologists' Union ; The Academy of Natural Sciences.

Chicago Style (17th ed.) Citation

Holder, Karen R., and Robert D. Montgomerie. Rock Ptarmigan: Lagopus Mutus. Washington, D.C. : Philadelphia, PA: American Ornithologists' Union ; The Academy of Natural Sciences, 1993.

MLA (9th ed.) Citation

Holder, Karen R., and Robert D. Montgomerie. Rock Ptarmigan: Lagopus Mutus. American Ornithologists' Union ; The Academy of Natural Sciences, 1993.